Kugwiritsa ntchito HPMC mu ufa wa putty

1. Kodi kukhuthala koyenera kwa HPMC ndi kotani?

——Yankho: Kawirikawiri, yuan 100,000 ndi yokwanira ufa wa putty. Zofunikira pa matope ndi zapamwamba, ndipo yuan 150,000 zimafunika kuti zigwiritsidwe ntchito mosavuta. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino ndipo kukhuthala kuli kochepa (70,000-80,000), n'zothekanso. Zachidziwikire, kukhuthala kwakukulu, kukhuthala kwa madzi kumakhala bwino. Kukhuthala kukapitirira 100,000, kukhuthala kudzakhudza kusunga madzi. Palibe zambiri pano.

2. Kodi zizindikiro zazikulu zaukadaulo ndi ziti?HPMC?

——Yankho: Kuchuluka kwa hydroxypropyl ndi kukhuthala, ogwiritsa ntchito ambiri akuda nkhawa ndi zizindikiro ziwirizi. Anthu omwe ali ndi hydroxypropyl yambiri nthawi zambiri amakhala ndi madzi abwino. Amene ali ndi kukhuthala kwakukulu amakhala ndi madzi abwino, pang'ono (osati kwathunthu), ndipo amene ali ndi kukhuthala kwakukulu amagwiritsidwa ntchito bwino mu simenti.

3. Kodi ntchito yaikulu ya HPMC mu ufa wa putty ndi yotani, ndipo kodi imachitika ndi mankhwala?

——Yankho: Mu ufa wa putty, HPMC imagwira ntchito zitatu monga kukhuthala, kusunga madzi ndi kumanga. Kukhuthala: Cellulose imatha kukhuthala kuti iimike ndikusunga yankholo mofanana mmwamba ndi pansi, ndikupewa kutsika. Kusunga madzi: kumapangitsa ufa wa putty kuumitsa pang'onopang'ono, ndikuthandiza phulusa la calcium kuchitapo kanthu pansi pa madzi. Kapangidwe: Cellulose imakhala ndi mafuta odzola, zomwe zingapangitse ufa wa putty kukhala ndi kapangidwe kabwino. HPMC sichita nawo machitidwe aliwonse a mankhwala, koma imangokhala ndi gawo lothandizira. Kuwonjezera madzi ku ufa wa putty ndikuyika pakhoma ndi njira ya mankhwala, chifukwa zinthu zatsopano zimapangidwa. Ngati mutachotsa ufa wa putty pakhoma kuchokera pakhoma, ndikuupera kukhala ufa, ndikuugwiritsanso ntchito, sugwira ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwanso. ) Zigawo zazikulu za ufa wa calcium wa phulusa ndi izi: chisakanizo cha Ca(OH)2, CaO ndi CaCO3 yochepa, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O Kalisiamu wa phulusa ali m'madzi ndi mumlengalenga Pansi pa mphamvu ya CO2, calcium carbonate imapangidwa, pomwe HPMC imasunga madzi okha, zomwe zimathandiza kuti calcium ya phulusa igwire bwino ntchito, ndipo sichita nawo chilichonse chomwe chimachitika.

4. HPMC ndi ether ya cellulose yosakhala ionic, ndiye kodi si ionic ndi chiyani?

——Yankho: M'mawu a anthu wamba, ma non-ion ndi zinthu zomwe sizingapange ioni m'madzi. Ionisation imatanthauza njira yomwe electrolyte imagawikana kukhala ma ayoni omwe ali ndi mphamvu zomwe zimatha kuyenda momasuka mu solvent inayake (monga madzi, mowa). Mwachitsanzo, sodium chloride (NaCl), mchere womwe timadya tsiku lililonse, umasungunuka m'madzi ndipo umapanga ma ayoni osunthika mosavuta (Na+) omwe ali ndi mphamvu zabwino komanso ma ayoni a chloride (Cl) omwe ali ndi mphamvu zoyipa. Izi zikutanthauza kuti, HPMC ikayikidwa m'madzi, sidzagawikana kukhala ma ayoni omwe ali ndi mphamvu, koma imapezeka mu mawonekedwe a mamolekyu.

5. Kodi pali ubale uliwonse pakati pa dontho la ufa wa putty ndi HPMC?

——Yankho: Kutayika kwa ufa wa putty kumakhudzana kwambiri ndi ubwino wa calcium ya phulusa, ndipo sikukhudzana kwenikweni ndi HPMC. Kuchepa kwa calcium ya imvi ndi chiŵerengero chosayenerera cha CaO ndi Ca(OH)2 mu calcium ya imvi kungayambitse kutayika kwa ufa. Ngati zikugwirizana ndi HPMC, ndiye kuti ngati kusunga madzi kwa HPMC kuli kochepa, kungayambitsenso kutayika kwa ufa.

6. Momwe mungasankhire yoyeneraHPMCpazifukwa zosiyanasiyana?

——Yankho: Kupaka ufa wa putty: zofunikira zake ndizochepa, ndipo kukhuthala kwake ndi 100,000, zomwe ndizokwanira. Chofunika ndikusunga madzi bwino. Kugwiritsa ntchito matope: zofunikira kwambiri, kukhuthala kwake ndi 150,000 n'kwabwino. Kugwiritsa ntchito guluu: zinthu zomwe zimagwira ntchito mwachangu komanso zokhuthala kwambiri zimafunika.